Air-heater for furnaces.



F. H. ZUCH.

,AIR HEATER FOR FURNACES.

APPLICATION FILED FEB. I6, 1915.

Patenred Aug. 3, 1915.

aI Imwow FRANK EUR/I51 lessee.

Tb allf'whom it concem Be it known that I, i

citizen of the United States, Riohmond Hill, Long island, of Queens and State of flew 11 top member 0 atom memh 1 e vented certain new and usef -d "e" i Y consist of vet: ments in'Air-Heaters Furnaces, o1 iiiZ-il oonvoiuted n forming in conthe followingisa specification, n -h as wiii h the top nzher do ivnwsrdiv .enebie those. skilled in the art to which portions 6 and in connection with ,3

appertains to make and use the some. the hot-tom membe t, directed por- This invention relates to means for heatt' and is s the box or in'g airsupplied to furnaces of various hi ranged sir paces and classes for the purpose of improving f I in eon-smnnt the'operation vof the furnace and providing: ternetely e and bottom 7e for amore perfectcombustion, and the consequent saving of fuel; andthe object there directed oert e 'ofis to provide a deviceor appanetus of ti he casinge forms cle'ss which is simple in constructir I; air shade or pas- 'fective inoperetion and may be thereof are air 75 plied to a furnace or heating apps-"sews e1 inner uowerdiy "almosteny class. ttoin portion 3? The invention is fully disclosed 1 Wall thereof, lowing specification, of which f penying drawing-forms a port, "out no separate parts of my improvemen' .nhted by" suitable reference chemo drawing being a 'se'ctionel view show n improved furnace air heath-1g device 5 door {I provides 'to'en ordinary fiurnece. ientei air chein- In the drawing tannins or (Z is rovided fication, I have shown 13cc Vic comprising e front wall a,

end the grate c, and the iron vided with the usual with a door (2 which, in struction, shown, is of or! shape and which is hinged a of the furnace and ads L 1 wardly in the usual meme; are not shown in the drswin In the practice of my in? A with the door cl, a bGX or casing" the tends a predetermined distance i1 W over the seal 01- nace when the door is closed on the grate, and 10:? adapted to swing through th thorough and coma when the door (2 is opens consequent saving the dimensions of which Wiii s to prevent, to an the dimensions, size or character oi the heavy sleek smoke nace.' V Y I on due. 10%

the form of construction sh Wiii be seen that casing e-is composed of e top'nienihe tics and inward bottom member 9 and side it enters or passes these separate 'parts'mny be cast or one-5h the discharged into jmlny desired manner, and when 5 A nd movement there 1 connected they form a, oomph, c Suffflfig than which the top and side class as the vertical spaces e in the top and bottom of the casing e and which open upwardly and downwardly and laterally through the side walls or of the said casing increase the heating surface or surfaces, the hot gases of combustion in the furnace being free to circulate through the spaces 6 and around all the surface walls of the boX or wardly therewith, said device comprising a box or casing composed of a top, bottom and side walls, the top and bottom being provided with deep transverse convolutions forming deep transverse recesses which open upwardly and downwardly, and laterally through the side walls, and which divide said box or casing into vertically and transversely arranged air spaces or passages.

which alternately communicate at the. top

and bottom thereof. 1

In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses this llth day of February 1915.

FRANK H. ZUCH;

WVitnesses C. MULREANY, H. E. THOMPSON. 

